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Vacuum cleaner filter bag having improved weld seam strength

A vacuum cleaner and filter bag technology, which is applied in the direction of filtration separation, cleaning equipment, cleaning devices, etc., can solve the problems of not providing solutions for vacuum cleaner filter bags, etc.

Active Publication Date: 2021-08-06
EUROLIFTERS HLDG NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, none of the suggested solutions provide a manufacturing friendly solution that provides good weld seam strength in vacuum cleaner filter bags of different recycled materials

Method used

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  • Vacuum cleaner filter bag having improved weld seam strength
  • Vacuum cleaner filter bag having improved weld seam strength
  • Vacuum cleaner filter bag having improved weld seam strength

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0077] figure 1 A schematic structure of an exemplary vacuum cleaner filter bag is shown. The filter bag comprises a bag wall 1, a holding plate 2 and an inflow port through which air to be filtered flows into the filter bag. The inflow openings are here formed by channel openings 3 in the base plate of the holding plate 2 and channel openings aligned therewith in the bag wall 1 . The retaining plate 2 serves to secure the vacuum cleaner filter bag in a corresponding support within the vacuum cleaner housing.

[0078] The bag wall 1 comprises multiple layers of non-woven fabric or layers of non-woven fabric and fiber web, which overlap each other from the inside of the bag to the outside of the bag. The nonwoven layers or fibrous web layers can be loosely stacked one on top of the other or connected to each other. This connection can be done over the entire surface (for example by spraying on adhesive) or just in time (for example by calendering a pattern).

[0079] The in...

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Abstract

The invention relates to a vacuum cleaner filter bag having a bag wall (1) comprising a support layer (8) comprising recycled polyethylene terephthalate, rPET, a fine filter layer (6) made from a meltblown non-woven fabric comprising polypropylene, PP, PET and / or recycled polypropylene, rPP, and a capacity layer (5) made of a non-woven fabric comprising rPET, recycled textile material, TLO, and / or rPP, wherein the bag wall (1) additionally comprises at least one intermediate layer (7), which is formed from a non-woven fabric or a fibrous fleece, and comprises rPP as a main component; and wherein the at least one intermediate layer is arranged between the support layer (8) and the fine filter layer (6) and / or between the fine filter layer (6) and the capacity layer (5).

Description

technical field [0001] The present invention relates to a vacuum cleaner filter bag, in particular a vacuum cleaner filter bag having a bag wall at least partially made of recycled material. Background technique [0002] In particular sustainable and environmentally friendly vacuum cleaner filter bags can be produced using textile waste (TLO, textile leftovers) and / or recycled plastic. Examples of such filter bags are disclosed in WO 2018 / 065164 A1 and WO 2017 / 158026 A1. [0003] For such vacuum cleaner filter bags it is unavoidable to employ different and non-uniform substrates both within and between layers of the nonwoven laminate. For example, the support layer is typically formed from recycled polyethylene terephthalate rPET, while the fine filter layer includes, for example, polypropylene PP with a high melt flow index, and the capacity layer includes TLO. In order to achieve an even higher proportion of recycled plastics, it is preferred in many cases to use a light...

Claims

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Application Information

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IPC IPC(8): A47L9/14B01D39/16
CPCA47L9/14B01D39/1623B01D2239/0283B01D2239/0622B01D2239/0654B01D2239/0672B32B2262/124B32B5/269B32B5/267B01D46/0001B01D46/02B01D2239/0233B01D2239/0618B01D2239/0627B01D2239/10B01D2239/1233B01D2239/1258B01D2239/1291B01D2275/10B01D2279/55B32B5/022B32B27/12B32B27/36B32B2262/0253B32B2262/0284B32B2272/00B32B2305/22B32B2307/72B32B2307/724B32B2432/00
Inventor 拉尔夫·赛耶简·舒尔廷克
Owner EUROLIFTERS HLDG NV